The 18D is the one to use. I never had any, but I did use 6Bs. They gave an off=hook indication, but as I recall they wouldn't break hold.

Sandman used to sell A- Lead control stuff as did...Crest? Maybe.

The 2A was as i recall for T&R for an ICM (I could be very wrong - it's been a l o o o n g time.

The 17B was a DPDT relay.

I'll email you PDFs of the relays that I have.

Sam


"Where are we going and why are we in this hand basket?"